CN102712962B - 利用热处理硬化钢板的局部具有不同强度的汽车配件制造方法 - Google Patents
利用热处理硬化钢板的局部具有不同强度的汽车配件制造方法 Download PDFInfo
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- CN102712962B CN102712962B CN201080038066.XA CN201080038066A CN102712962B CN 102712962 B CN102712962 B CN 102712962B CN 201080038066 A CN201080038066 A CN 201080038066A CN 102712962 B CN102712962 B CN 102712962B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 60
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 22
- 239000010959 steel Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title abstract description 24
- 229910000760 Hardened steel Inorganic materials 0.000 claims abstract description 52
- 238000003466 welding Methods 0.000 claims abstract description 26
- 238000002360 preparation method Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims description 21
- 239000011572 manganese Substances 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
- 239000005864 Sulphur Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052796 boron Inorganic materials 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 10
- 239000010955 niobium Substances 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 9
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910018125 Al-Si Inorganic materials 0.000 claims 1
- 229910018520 Al—Si Inorganic materials 0.000 claims 1
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 238000003856 thermoforming Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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Abstract
本发明涉及一种局部具有不同强度的汽车配件制造方法,更具体地涉及一种利用局部具备不同厚度的热处理硬化钢的汽车配件制造方法。本发明提供一种汽车配件制造方法,该方法包括如下步骤:坯料薄片制备步骤,根据所需的强度利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板制备坯料薄片;坯料结合体形成步骤,利用激光焊接连接上述坯料薄片来形成坯料结合体;冷成型步骤,对上述坯料结合体进行冷压成型;以及热处理硬化步骤,将冷成型的配件加热至AC3温度以上,然后在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
Description
技术领域
本发明涉及一种局部具有不同强度的汽车配件制造方法,更具体地,涉及一种利用局部具备不同厚度的热处理硬化钢的汽车配件制造方法。
背景技术
随着人们追求车辆高油耗效率以及汽车轻量化,车辆配件正在持续实现高强度化。
并且,在车辆的各个部分,由于在结构特点上,某些部分要求高强度,而有些部分则要求高冲击韧性。即,存在一些局部要求不同强度(或者物理性能)的配件。
过去在制造具有不同强度的车辆的配件时,对于要求高强度的部分,利用热处理硬化钢板来制造配件;相对而言,对于要求低强度的部分,则使用一般钢板来进行制造,然后通过焊接方式接合上述配件的方法制造车辆。
但这种热处理硬化配件以焊接方式与由一般钢板制造的配件接合时,焊接接合部位经过在焊接热作用下重新加热并再次冷却的过程,由此导致出现热处理硬化效果消失的问题。即,热处理硬化配件的焊接部位的强度降低,导致在车辆发生冲突时该部分出现断裂的问题。
作为另一种方法,焊接不同厚度或不同强度的不同材料,制造坯料之后,通过冷压成型的方法来制造配件。
但使用这种方法时,如果采用不同厚度的材料,则由于材料之间的弹性变形之差而导致出现尺寸不一致的现象,进而无法达到所需的尺寸精密度。
并且,采用不同强度的材料的情况下,随着各个材料出现回弹(spring back)现象,也会同样出现尺寸不一致的现象。
发明内容
技术问题
本发明的目的在于,提供一种由于使用热处理硬化成型方法,因而不发生成型残留应力的汽车配件。
本发明的再一个目的在于,提供一种在焊接部位不发生强度降低的汽车配件。
本发明的另一个目的在于,提供一种由于避免出现回弹现象,因而具有优秀的尺寸精密度的汽车配件。
解决问题的手段
本发明提供一种汽车配件制造方法,其包括如下步骤:坯料薄片制备步骤,根据所需的强度,利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板来制备坯料薄片;坯料结合体形成步骤,利用激光焊接(Laser welding)连接上述坯料薄片来形成坯料结合体;冷成型步骤,对上述坯料结合体进行冷压成型;以及热处理硬化步骤,将冷成型的配件加热至AC3温度以上,然后在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
并且,本发明提供一种汽车配件制造方法,其包括如下步骤:坯料薄片制备步骤,根据所需的强度,利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板来制备坯料薄片;坯料结合体形成步骤,利用激光焊接(Laser welding)连接上述坯料薄片来形成坯料结合体;冷成型步骤,对上述坯料结合体以成品形状的80~99%冷压成型;以及热处理硬化成型步骤,将冷成型的配件加热至AC3温度以上,然后使剩余1~20%成型,在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
并且,本发明提供一种汽车配件制造方法,其包括如下步骤:坯料薄片制备步骤,根据所需的强度,利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板来制备坯料薄片;坯料结合体形成步骤,利用激光焊接(Laser welding)连接上述坯料薄片并形成坯料结合体;以及热处理硬化成型步骤,将上述坯料结合体加热至AC3温度以上,然后进行热压成型,在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
上述坯料薄片制备步骤的热处理硬化钢板优选地采用未镀金的冷轧钢板或者通过镀锌、镀Al、镀Al-Si及高温氧化剂涂敷中的任一方法进行表面处理的材料。
发明的效果
本发明提供一种局部具备不同强度的汽车配件制造方法,其特征在于,将热处理硬化钢板作为材料使用,以激光焊接方式在坯料状态下进行焊接之后,经过冷成型和/或热成型过程加工配件的形状后,完成热处理硬化过程。
由此,配件成品中不会发生成型残留应力,进而带来高尺寸精密度的效果。
并且,进行激光焊接的部分完成焊接之后,由于与母材一同经过热处理过程,因而带来使焊接的部位也能够呈现出与母材相同的物理性能的效果。
附图说明
图1是表示根据本发明第一实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法的工序流程图;
图2是表示根据本发明第一实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法中各个工序的配件状态的图;
图3是表示根据本发明第二实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法的工序流程图;
图4是表示根据本发明第二实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法中各个工序的配件状态的图;
图5是表示根据本发明第三实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法的工序流程图;
图6是表示根据本发明第三实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法中各个工序的配件状态的图。
具体实施方式
以下,参照附图对本发明的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法的实施例进行说明。
在这种说明过程中,为了说明的明确表达和说明的方便性,附图所示的线条的厚度或结构元件的大小等能够夸张表示。
并且,后述的术语是针对本发明中的功能而定义的术语,它能够根据使用者、运用者的意愿或者惯例而不同。
因此,对于这种术语的定义应基于本说明书的整体内容。
图1是表示根据本发明第一实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法的工序流程图,图2是表示根据本发明第一实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法中各个工序的配件状态的图。
参照图1,根据本发明的汽车配件制造方法包括如下步骤:坯料薄片制备步骤(步骤S-11),根据所需的强度利用具备不同厚度的热处理硬化钢板制备多个坯料薄片;坯料结合体形成步骤(步骤S-12,利用激光焊(Laser welding)接连接上述坯料薄片来形成坯料结合体;冷成型步骤(步骤S-13),对上述坯料结合体进行冷压成型;热处理硬化步骤(步骤S-14),将冷成型的配件加热至AC3温度以上,然后在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
图2中所示的实施例是表示根据本发明的汽车配件制造方法制造侧面结构材料(Side outer reinforce)的过程。
优选地,就侧面结构材料而言,部分要求其他强度,为了实现车辆的轻量化,尽可能利用强度高的高强度钢板来使厚度最小化。
但是,在一般的高强度钢板的情况下,由于可成型性差,难以加工成所需的形状,并且,因回弹现象,具有难以确保尺寸精密度的问题。
本发明的特征在于,利用热处理硬化型钢板,根据所需的强度,形成具备不同材质或不同厚度的坯料薄片,然后以激光焊接方式接合并成型。
在坯料薄片制备步骤(步骤S-11)中,从根据所需的强度具备不同材质或不同厚度的热处理硬化型钢板薄片制备出各部分的坯料薄片。
如此制备的坯料薄片,在坯料结合体形成步骤(步骤S-12)中,通过激光焊接来进行接合而形成坯料结合体。
在冷成型步骤(步骤S-13)中,对坯料结合体进行冷压成型来加工配件的形状。如果进行冷成型,由于出现回弹(spring back)现象,则会导致配件的精密度降低。
但是,本发明在冷成型步骤(步骤S-13)之后的热处理硬化步骤(步骤S-14)中,将冷成型的配件加热至AC3温度以上,然后在以对应最终配件形状的模具约束的状态下进行淬火。因此,在热处理硬化步骤(步骤S-14)中,带来如下的效果:消除冷成型时发生的成型残留应力,并提高配件的强度,确保配件的尺寸精密度。
图3是表示根据本发明第二实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法的工序流程图,图4是表示根据本发明第二实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法中各个工序的配件状态的图。
配件的形状复杂或加工深度深的情况下,将导致冷成型时出现钢板断裂等的不良。
第二实施例是在通过冷成型方式难以形成成品形状的情况下能够适用的方法。
如图所示,根据第二实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法包括如下步骤:坯料薄片制备步骤(步骤S-21),根据所需的强度,利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板来制备坯料薄片;坯料结合体形成步骤(步骤S-22),利用激光焊接(Laser welding)连接上述坯料薄片来形成坯料结合体;冷成型步骤(步骤S-23),对上述坯料结合体进行冷压成型,使其成为成品形状的80~99%;热处理硬化成型步骤(步骤S-24),将冷成型的配件加热至AC3温度以上,然后使剩余1~20%成型,在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
坯料薄片制备步骤(步骤S-21)及坯料结合体形成步骤(步骤S-22)与第一实施例相同,故而在此省略重复说明。
第二实施例的特征在于,在冷成型步骤(步骤S-23)中,成型最终配件形状的80~99%,剩余成型量在热处理硬化成型步骤(步骤S-24)中成型。
配件的成型是三维层面的,因此难以通过数值来限定成型比率。本发明中以最终产品的厚度作为标准计算成型比率。
例如,最终成型的配件的厚度是50mm,如果完成冷成型的配件的厚度是45mm,冷成型的成型比率则是90%。
在冷成型过程中,之所以不以成品水平成型,是因为如上所述,考虑到成型深度深或者形状复杂的配件其冷成型时的成型局限性。
在上述第一实施例的情况下,最终步骤是热处理硬化步骤(步骤S-14),未实现热成型,然而,在第二实施例的情况下,最终步骤是热处理硬化成型步骤(步骤S-24),在加热至AC3温度以上的状态下,进行热成型的同时以模具约束并进行淬火,由此成型剩余成型量,进行热处理硬化。
也就是说,热处理硬化成型步骤(步骤S-24)是在加热状态下对剩余成型量1~20%进行热成型之后,闭合模具的状态下进行淬火,以约束配件的状态进行硬化,来确保尺寸精密度,进而提高强度。
在第一实施例与第二实施例中,以激光焊接的部分与钢板一同均经过热处理过程,从而变得与非焊接部组织相同。因此,不会发生焊接部的强度降低的现象。
图5是表示根据本发明第三实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法的工序流程图,图6是表示根据本发明第三实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法中各个工序的配件状态的图。
第三实施例与上述实施例不同,其特征在于,无冷成型工序,通过热成型来成型形状。
根据本发明的第三实施例的利用热处理硬化钢板的局部具备不同强度的汽车配件制造方法包括如下步骤:坯料薄片制备步骤(步骤S-31),根据所需的强度,利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板来制备坯料薄片;坯料结合体形成步骤(步骤S-32),利用激光焊接(Laser welding)连接上述坯料薄片来形成坯料结合体;热处理硬化成型步骤(步骤S-33),将上述坯料结合体加热至AC3温度以上,然后进行热压成型,在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
坯料薄片制备步骤(步骤S-31)及坯料结合体形成步骤(步骤S-32)与上述实施例相同,故而在此省略重复说明。
本实施例在作为最终步骤的热处理硬化成型步骤(步骤S-33)中,将坯料结合体加热至AC3温度以上之后,通过热成型来成型配件的形状,在闭合模具的状态下进行淬火。
因此,坯料结合体进行热成型的同时进行热处理硬化。
如果采用这种方法来制造汽车配件,即便不使用具有可成型性局限性的高强度钢板,最终也能够制造出100kgf/mm2以上的高强度配件。
以下,将对本发明使用的热处理硬化钢板进行说明。
热处理硬化钢板能够使用未进行表面处理的冷轧钢板或者以镀锌(Zn)、镀铝(Al)、镀铝-硅(Al-Si)及高温氧化剂涂敷中的任一方法进行表面处理的钢板。
在上述实施例的热处理硬化步骤(步骤S-14)或热处理硬化成型步骤(步骤S-24、步骤S-31)中,如果加热至AC3温度以上,则会发生脱碳及氧化。为了防止这种现象,优选地使用如上述方法进行表面处理的热处理硬化钢板。
在使用表面处理钢板的情况下,加热温度优选为1000℃以下。如果超过1000℃,则会发生表面镀金层或涂敷层的蒸发。
下面,对本发明使用的热处理硬化钢板的组成进行说明。
上述坯料薄片制备步骤的热处理硬化钢板包含碳(C)0.15~0.5重量%、硅(Si)0.15~0.5重量%、锰(Mn)0.5~3.0重量%、磷(P)0.1重量%以下、硫磺(S)0.1重量%以下、铬(Cr)0.01~1.0重量%、钛(Ti)0.2重量%以下、铝(Al)0.1重量%以下以及硼(B)0.0005~0.08重量%,剩余部分由铁(Fe)及不可避免的杂质组成。
具有上述组成的热处理硬化型钢板能够用于制造需要100kgf/mm2以上高强度的配件。
并且,作为本发明的热处理硬化钢板能够使用包含碳(C)0.15~0.4重量%、硅(Si)0.03~0.4重量%、锰(Mn)1.0~2.0重量%、磷(P)0.12重量%以下、硫磺(S)0.003重量%以下、硼(B)0.0005~0.08重量%、锆(Zr)0.005~0.1重量%以及钙(Ca)0.001~0.005重量%,剩余部分由铁(Fe)及不可避免的杂质组成的热处理硬化型钢板。
具有这种组成的钢板,由于具有锆与钙成分的添加效果,具有高耐冲击性,因而能够用于需要高耐冲击性能部分的坯料薄片的制造。
并且,作为本发明的热处理硬化钢板,能够使用包含碳(C)0.15~0.30重量%、硅(Si)0.05~0.5重量%、锰(Mn)1.0~2.0重量%、硼(B)0.0005~0.0040重量%、硫磺(S)0.003重量%以下、磷(P)0.012重量%以下,剩余部分由铁(Fe)及其他不可避免的杂质的合金组成的钢中,还包含钴(Co)、锆(Zr)及锑(Sb)中两种以上。
具有上述组成的热处理硬化钢板,在热压加工过程中未添加导致钢板上出现裂缝的钛(Ti)、铌(Nb)、钼(Mo)及铬(Cr)等,而选择性地添加了钴(Co)、锑(Sb)及锆(Zr)中的两种以上,以此确保高温韧性。因此,具有如下效果:能够在低温状态下进行挤压加工,因此不仅能够节省能源,同时能够保护镀金钢板的镀金层,防止未镀金钢板的氧化铁皮的生成。
并且,本发明为了提高焊接及冲击特性,能够使用将碳(C)0.15~0.40重量%、硅(Si)0.03~0.30重量%、锰(Mn)1.0~2.0重量%、硼(B)0.0005~0.004重量%作为基本成分,包含硫磺(S)0.003重量%以下、磷(P)0.012重量%以下、钙(Ca)0.001~0.005重量%、铌(Nb)0.005~0.05重量%、锆(Zr)0.005~0.1重量%及钴(Co)0.0005~0.5重量%以下,剩余部分由铁(Fe)及不可避免的杂质组成的热处理硬化钢板。
并且,本发明能够使用具有1200~1500MPa的抗拉强度及优秀的韧性的将包含碳(C)0.19~0.40重量%、锰(Mn)0.5~2.5重量%、铬(Cr)0.1~0.5重量%、硼(B)0.0015~0.0040重量%、硅(Si)0.01~0.5重量%、磷(P)0.05重量%以下、硫磺(S)0.05重量%以下、铝(Al)0.03重量%以下、镍(Ni)0.01~2重量%、铌(Nb)0.01~0.10重量%、铜(Cu)0.01~1重量%及钼(Mo)0.01~0.20重量%中的一种或两种以上作为基本成分,剩余部分由铁(Fe)及不可避免的杂质组成的热处理硬化钢板。
以上参照附图对本发明的实施例进行了说明,但本发明不局限于上述实施例,能够以互不相同的各种形态进行变形,对于本发明所属技术领域的普通技术人员来说,应当理解,在不变更本发明的技术思想或必要特征的条件下能够实施不同的具体实施方式。因此,应视为上述实施例在所有层面仅仅作为示例,并不用以限定。
Claims (8)
1.一种汽车配件制造方法,其特征在于,包括如下步骤:
坯料薄片制备步骤,根据所需的强度,利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板来制备坯料薄片;
坯料结合体形成步骤,利用激光焊接连接所述坯料薄片来形成坯料结合体;
冷成型步骤,对所述坯料结合体进行冷压成型;以及,
在所述冷成型步骤之后的热处理硬化步骤,将冷成型的配件加热至AC3温度以上,然后在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
2.一种汽车配件制造方法,其特征在于,包括如下步骤:
坯料薄片制备步骤,根据所需的强度利用具备不同厚度的热处理硬化钢板或者具备不同材质的热处理硬化钢板来制备坯料薄片;
坯料结合体形成步骤,利用激光焊接连接所述坯料薄片来形成坯料结合体;
冷成型步骤,对所述坯料结合体进行冷压成型,使其成为成品形状的大于80至99%;以及,
热处理硬化成型步骤,将冷成型的配件加热至AC3温度以上,然后使剩余1至小于20%成型,在以模具约束的状态下进行淬火来消除成型残留应力,并提高强度。
3.根据权利要求1或2所述的汽车配件制造方法,其特征在于,所述坯料薄片制备步骤的热处理硬化钢是通过镀锌、镀Al、镀Al-Si及高温氧化剂涂敷中的任一方法进行表面处理的钢。
4.根据权利要求1或2所述的汽车配件制造方法,其特征在于,所述坯料薄片制备步骤的热处理硬化钢板包含碳(C)0.15~0.5重量%、硅(Si)0.15~0.5重量%、锰(Mn)0.5~3.0重量%、磷(P)0.1重量%以下、硫磺(S)0.1重量%以下、铬(Cr)0.01~1.0重量%、钛(Ti)0.2重量%以下、铝(Al)0.1重量%以下以及硼(B)0.0005~0.08重量%,剩余部分由铁(Fe)及不可避免的杂质组成。
5.根据权利要求1或2所述的汽车配件制造方法,其特征在于,所述坯料薄片制备步骤的热处理硬化钢板包含碳(C)0.15~0.4重量%、硅(Si)0.03~0.4重量%、锰(Mn)1.0~2.0重量%、磷(P)0.12重量%以下、硫磺(S)0.003重量%以下、硼(B)0.0005~0.08重量%、锆(Zr)0.005~0.1重量%以及钙(Ca)0.001~0.005重量%,剩余部分由铁(Fe)及不可避免的杂质组成。
6.根据权利要求1或2所述的汽车配件制造方法,其特征在于,所述坯料薄片制备步骤的热处理硬化钢板,在包含碳(C)0.15~0.30重量%、硅(Si)0.05~0.5重量%、锰(Mn)1.0~2.0重量%、硼(B)0.0005~0.0040重量%、硫磺(S)0.003重量%以下、磷(P)0.012重量%以下,剩余部分由铁(Fe)及其他不可避免的杂质的合金组成的钢中,还包含钴(Co)、锆(Zr)及锑(Sb)中两种以上。
7.根据权利要求1或2所述的汽车配件制造方法,其特征在于,所述坯料薄片制备步骤的热处理硬化钢板将碳(C)0.15~0.40重量%、硅(Si)0.03~0.30重量%、锰(Mn)1.0~2.0重量%、硼(B)0.0005~0.004重量%作为基本成分,包含硫磺(S)0.003重量%以下、磷(P)0.012重量%以下、钙(Ca)0.001~0.005重量%、铌(Nb)0.005~0.05重量%、锆(Zr)0.005~0.1重量%以及钴(Co)0.0005~0.5重量%以下,剩余部分由铁(Fe)及不可避免的杂质组成。
8.根据权利要求1或2所述的汽车配件制造方法,其特征在于,所述坯料薄片制备步骤的热处理硬化钢板包含碳(C)0.19~0.40重量%、锰(Mn)0.5~2.5重量%、铬(Cr)0.1~0.5重量%、硼(B)0.0015~0.0040重量%、硅(Si)0.01~0.5重量%、磷(P)0.05重量%以下、硫磺(S)0.05重量%以下、铝(Al)0.03重量%以下以及镍(Ni)0.01~2重量%、铌(Nb)0.01~0.10重量%、铜(Cu)0.01~1重量%以及钼(Mo)0.01~0.20重量%中的一种或两种以上成分作为基本成分,剩余部分由铁(Fe)及不可避免的杂质组成。
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